i'll read spoon's response after i've posted mine - this may be redundant, but whatever. I'm interested in seeing where our thinking differs.

hand 1 - raise more pre, bet flop bigger, bet-fold turn.
hand 2 - foldor call pre are both fine. Flop raise is good, and now fold to the 3-bet = zeebo or something
hand 3 - interesting that your standard raise is 3x not 4x. Try 4x from ep for a while perhaps? You can fold to the squeeze, calling is better without players in position yet to act, you can also jam. Flop is check-fold as played, small bet is maybe ok sometimes with better reads. Turn is absolutely a check-fold.